The Warhammer
Online Website announces Warhammer Online: Age of Reckoning will
close on December 18th due to the license for the MMORPG lapsing:

We here
at Mythic have built an amazing relationship working with Games Workshop
creating and running Warhammer Online: Age of Reckoning over the last 8 years.
Unfortunately, as with all licensing deals they do eventually come to end and on
December 18th, 2013 we will no longer be operating Warhammer Online. As such we
will no longer be selling 3 month game time codes or have the ability to auto
renew your accounts for 3 months as of September 18th, 2013. If you would like
to read some additional thoughts from one of WAR’s Producer please check out
http://www.warhammeronline.com/.
From all of us here at Mythic we thank you again for your dedication and support
over the last five years.

I always enjoyed the free trial that they ran with it whenever I decided to pop back in... but felt that there was no reason to sub because once you got past the free cap, the general consensus was that the population died out.

I always felt that they needed to go the DDO route and allow you to purchase a way to take your free trial character past the level plateaus (or grind out an ingame method as an alternative). That likely would have brought in a lot more people to stick around.